RESEARCH ON THE INFLUENCE OF GRINDING TIME ON THE PARTICLE SIZE DISTRIBUTION WHEN OBTAINING ROSEHIPS POWDER

This study evaluates the influence of grinding time on the particle size distribution of rosehip powder. A universal mill based on the cutting principle was used, equipped with four sieves with different mesh sizes (0.2 mm, 0.5 mm, 1 mm, and 4 mm). The grinding durations were set at 30 seconds, 60 seconds, 90 seconds, 120 seconds, and 150 seconds. Each grinding stage was followed by particle separation using a set of sieves to determine the particle size distribution. The results indicated that both the grinding duration and the mesh size of the sieves significantly impacted the particle size distribution The 0.5 mm sieve associated with a grinding time of 90 seconds provides an optimal balance between achieving a reduced average particle diameter, high specific surface area, and energy efficiency. These findings have important implications for the production and quality control of rosehips powder in various applications, including food, nutraceutical, and pharmaceutical products. Understanding the granulometric behavior of rosehip powder can help improve the solubility, stability, and bioavailability of the product. This research establishes the groundwork for further studies focused on optimizing grinding processes and developing rosehip powder products with customized particle size distributions to meet the specific demands of various industries.